/ dɪˈrɪʒn; NAmE / noun
[ U ] a strong feeling that sb/sth is ridiculous and not worth considering seriously, shown by laughing in an unkind way or by making unkind remarks
SYN scorn :
Her speech was greeted with howls of derision.
He became an object of universal derision.
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WORD ORIGIN
late Middle English : via Old French from late Latin derisio(n-) , from deridere scoff at.